Tuition may be steep, but things only get worse when you factor in the cost of textbooks. When we highlighted the best places to save money on textbooks, we included Chegg, an online textbook rental service. Now the popular bookstore Barnes & Noble has joined in the fray with a rental program integrated with 25 colleges in the U.S.—allowing students to rent textbooks from participating college bookstores, online, or from B&N stores on campus. You can see if your college is participating here. [Barnes & Noble College via TechCrunch]